default_log_file

# File railties/lib/rails/application/configuration.rb, line 563
      def default_log_file
        path = paths["log"].first
        unless File.exist? File.dirname path
          FileUtils.mkdir_p File.dirname path
        end

        f = File.open path, "a"
        f.binmode
        f.sync = autoflush_log # if true make sure every write flushes
        f
      end